Jahromi AS, Cina CS, Liu Y, Clase CM. Sensitivity and specificity of color duplex ultrasound measurement in the estimation of internal carotid artery stenosis: a systematic review and meta-analysis. J Vasc Surg. 2005;41(6):962–72.PubMedCrossRef

American Heart Association. Heart disease and stroke statistics. 2011. Available at: http://www.heart.org/HEARTORG/General/Heart-and-Stroke-Association-Statistics_UCM_319064_SubHomePage.jsp. Accessed 13 June 2011.

Kelly-Hayes M, Beiser A, Kase CS, Scaramucci A, D’Agostino RB, Wolf PA. The influence of gender and age on disability following ischemic stroke: the Framingham study. J Stroke Cerebrovasc Dis. 2003;12(3):119–26.PubMedCrossRef

Colgan MP, Strode GR, Sommer JD, Gibbs JL, Sumner DS. Prevalence of asymptomatic carotid disease: results of duplex scanning in 348 unselected volunteers. J Vasc Surg. 1988;8(6):674–8.PubMed

Ricci S, Flamini FO, Marini M, Antonini D, Bartolini S, Celani MG, et al. The prevalence of stenosis of the internal carotid in subjects over 49: a population study. Epidemiol Prev. 1991;13(48–49):173–6.PubMed

Warlow C. Endarterectomy for asymptomatic carotid stenosis? Lancet. 1995;345(8960):1254–5.PubMedCrossRef

Bots ML, Breslau PJ, Briet E, de Bruyn AM, van Vliet HH, van den Ouweland FA, et al. Cardiovascular determinants of carotid artery disease. The Rotterdam Elderly study. Hypertension. 1992;19(6 Pt 2):717–20.PubMedCrossRef

Fine-Edelstein JS, Wolf PA, O’Leary DH, Poehlman H, Belanger AJ, Kase CS, et al. Precursors of extracranial carotid atherosclerosis in the Framingham study. Neurology. 1994;44(6):1046–50.PubMedCrossRef

Vecchio TJ. Predictive value of a single diagnostic test in unselected populations. N Engl J Med. 1966;274(21):1171–3.PubMedCrossRef

Sackett DL, Haynes RB, Guyatt GH, Tugwell P. Clinical epidemiology: a basic science for clinical medicine. 2nd ed. Boston: Little, Brown and Co; 1991.

Faught WE, Mattos MA, Van Bemmelen PS, Hodgson KJ, Barkmeier LD, Ramsey DE, et al. Color-flow duplex scanning of carotid arteries: new velocity criteria based on receiver operator characteristic analysis for threshold stenoses used in the symptomatic and asymptomatic carotid trials. J Vasc Surg. 1994;19(5):818–27.PubMedCrossRef

Norris JW, Zhu CZ, Bornstein NM, Chambers BR. Vascular risks of asymptomatic carotid stenosis. Stroke. 1991;22(12):1485–90.PubMedCrossRef

European Carotid Surgery Trialists’ Collaborative Group. Randomised trial of endarterectomy for recently symptomatic carotid stenosis: final results of the MRC European Carotid Surgery Trial (ECST). Lancet. 1998;351(9113):1379–87.

Hobson RW, Weiss DG, Fields WS, Goldstone J, Moore WS, Towne JB, et al. Efficacy of carotid endarterectomy for asymptomatic carotid stenosis. The Veterans Affairs Cooperative Study Group. N Engl J Med. 1993;328(4):221–7.PubMedCrossRef

Hill AB. Should patients be screened for asymptomatic carotid artery stenosis? Can J Surg. 1998;41(3):208–13.PubMed

Sleight SP, Poloniecki J, Halliday AW. Asymptomatic carotid stenosis in patients on medical treatment alone. Eur J Vasc Endovasc Surg. 2002;23(6):519–23.PubMedCrossRef

Nehler MR, Moneta GL, Lee RW, Edwards JM, Taylor Jr LM, Porter JM. Improving selection of patients with less than 60% asymptomatic internal carotid artery stenosis for follow-up carotid artery duplex scanning. J Vasc Surg. 1996;24(4):580–5.PubMedCrossRef

Rockman CB, Riles TS, Lamparello PJ, Giangola G, Adelman MA, Stone D, et al. Natural history and management of the asymptomatic, moderately stenotic internal carotid artery. J Vasc Surg. 1997;25(3):423–31.PubMedCrossRef

Mansour MA, Littooy FN, Watson WC, Blumofe KA, Heilizer TJ, Steffen GF, et al. Outcome of moderate carotid artery stenosis in patients who are asymptomatic. J Vasc Surg. 1999;29(2):217–25.PubMedCrossRef

Muluk SC, Muluk VS, Sugimoto H, Rhee RY, Trachtenberg J, Steed DL, et al. Progression of asymptomatic carotid stenosis: a natural history study in 1004 patients. J Vasc Surg. 1999;29(2):208–14.PubMedCrossRef